Y:SY
Acting

Y:SY

Born Jan 22, 2000 in Seoul, South KoreaKnown for Acting

Biography

Lee Seo-yeon, known professionally as Y:SY, is a South Korean singer-songwriter and rapper under H1GHR Music. She is a former member of the girl group fromis_9, formed through the reality survival show Idol School (2017). She left the group in 2024. She made her solo debut on November 17, 2025, with the digital single Naked.

13 Titles on FlixWow

Duckbap House poster

Duckbap House

fromis_9 concert ＜LOVE FROM.＞ IN JAPAN poster

fromis_9 concert ＜LOVE FROM.＞ IN JAPAN

Jae Joong and Friends poster

Jae Joong and Friends

Lee Mujin Service poster
8.5

Lee Mujin Service

fromis_9's Summer Night poster

fromis_9's Summer Night

fromis_9's Autumn Night poster

fromis_9's Autumn Night

The Silence Of IDOL poster

The Silence Of IDOL

We See Winter poster
6.5

We See Winter

Welcome to Heal Inn poster
6.5

Welcome to Heal Inn

Fromis's Room poster
10.0

Fromis's Room

프롤로그_프로미스의 방 엿보기 poster

프롤로그_프로미스의 방 엿보기

Idol School poster
9.0

Idol School

Paramount on Parade poster
5.9

Paramount on Parade